Opinions from L. M. Lambe 1908
- 'Aceratherium belongs to Rhinocerotidae'
- 'Aceratherium exiguum belongs to Aceratherium'
- 'Aceratherium mite belongs to Aceratherium'
- 'Aceratherium trigonodum [misspelled as Leptaceratherium trigonodon] belongs to Leptaceratherium'
- 'Actinopterygii was reranked as a order and belongs to Pisces'
- 'Aetheospondyli belongs to Actinopterygii'
- 'Agriochoeridae belongs to Artiodactyla'
- 'Agriochoerus belongs to Agriochoeridae'
- 'Agriochoerus antiquus belongs to Agriochoerus'
- 'Amia belongs to Amiidae'
- 'Amia exilis belongs to Amia'
- 'Amia macrospondyla belongs to Amia'
- 'Amia whiteavesiana belongs to Amia'
- 'Amiidae belongs to Protospondyli'
- 'Amiurus belongs to Siluridae'
- 'Amiurus cancellatus belongs to Amiurus'
- 'Amiurus maconnellii belongs to Amiurus'
- 'Anchitherium westoni is recombined as Mesohippus westoni'
- 'Ancodus belongs to Anthracotheriidae'
- 'Ancylopoda was reranked as a suborder and belongs to Ungulata'
- 'Anguidae belongs to Lacertilia'
- 'Anosteira belongs to Chelydridae'
- 'Anosteira ornata belongs to Anosteira'
- 'Anthracotheriidae belongs to Artiodactyla'
- 'Anthracotherium belongs to Anthracotheriidae'
- 'Anthracotherium pygmaeum belongs to Anthracotherium'
- 'Artiodactyla was reranked as a suborder and belongs to Ungulata'
- 'Camelidae belongs to Artiodactyla'
- 'Canidae belongs to Fissipedia'
- 'Canis hartshornianus is recombined as Protemnocyon hartshornianus'
- 'Canis lippincottianus is recombined as Cynodictis lippincottianus'
- 'Carnivora belongs to Mammalia'
- 'Castoridae belongs to Simplicidentata'
- 'Chalicotheriidae belongs to Ancylopoda'
- 'Chalicotherium belongs to Chalicotheriidae'
- 'Chalicotherium bilobatum belongs to Chalicotherium'
- 'Chelonii is corrected as Chelonia and belongs to Reptilia'
- 'Chelydridae belongs to Cryptodira'
- 'Creodonta belongs to Carnivora'
- 'Crocodilia belongs to Reptilia'
- 'Crocodilus prenasalis belongs to Crocodilus'
- 'Crocodylidae is corrected as Crocodilidae and belongs to Eusuchia'
- 'Crocodylus [misspelled as Crocodilus] belongs to Crocodilidae'
- 'Cryptodira belongs to Chelonia'
- 'Cylindrodon belongs to Castoridae'
- 'Cylindrodon fontis belongs to Cylindrodon'
- 'Cynodictis belongs to Canidae'
- 'Daphoenus belongs to Canidae'
- 'Daphoenus felinus belongs to Daphoenus'
- 'Deinictis is corrected as Dinictis and belongs to Felidae'
- 'Didelphidae is corrected as Didelphyidae and belongs to Polyprotodontia'
- 'Didelphis [misspelled as Didelphys] belongs to Didelphyidae'
- 'Didelphys valens belongs to Didelphys'
- 'Dinictis felina belongs to Dinictis'
- 'Duplicidentata was reranked as a suborder and belongs to Rodentia'
- 'Elotherium coarctatum belongs to Elotherium'
- 'Equidae belongs to Perissodactyla'
- 'Eusuchia belongs to Crocodilia'
- 'Eutypomys belongs to Castoridae'
- 'Eutypomys parvus belongs to Eutypomys'
- 'Felidae belongs to Fissipedia'
- 'Fissipeda was reranked as the suborder Fissipedia and belongs to Carnivora'
- 'Hemipsalodon belongs to Hyaenodontidae'
- 'Hemipsalodon grandis belongs to Hemipsalodon'
- 'Hyaenodon belongs to Hyaenodontidae'
- 'Hyaenodon crucians belongs to Hyaenodon'
- 'Hyaenodon cruentus belongs to Hyaenodon'
- 'Hyaenodontidae belongs to Creodonta'
- 'Hyopotamus brachyrhynchus is recombined as Ancodus brachyrhynchus'
- 'Hypertragulus transversus belongs to Hypertragulus'
- 'Hyracodon belongs to Hyracodontidae'
- 'Hyracodon priscidens belongs to Hyracodon'
- 'Hyracodontidae belongs to Perissodactyla'
- 'Ischyromyidae belongs to Simplicidentata'
- 'Ischyromys belongs to Ischyromyidae'
- 'Ischyromys typus belongs to Ischyromys'
- 'Lacertilia was reranked as a suborder and belongs to Squamata'
- 'Lepidosteus longus belongs to Lepidosteus'
- 'Lepisosteidae [misspelled as Lepidosteidae] belongs to Aetheospondyli'
- 'Lepisosteus [misspelled as Lepidosteus] belongs to Lepidosteidae'
- 'Leporidae belongs to Duplicidentata'
- 'Leptaceratherium belongs to Rhinocerotidae'
- 'Leptomeryx belongs to Tragulidae'
- 'Leptomeryx esulcatus belongs to Leptomeryx'
- 'Leptomeryx mammifer belongs to Leptomeryx'
- 'Leptomeryx semicinctus belongs to Leptomeryx'
- 'Leptomeryx speciosus belongs to Leptomeryx'
- 'Marsupialia was reranked as a order and belongs to Mammalia'
- 'Megacerops belongs to Titanotheriidae'
- 'Megacerops assiniboiensis belongs to Megacerops'
- 'Megacerops primitivus belongs to Megacerops'
- 'Menodus angustigenis is recombined as Megacerops angustigenis'
- 'Menodus selwynianus is recombined as Megacerops selwynianus'
- 'Menodus syceras is recombined as Megacerops syceras'
- 'Merycoidodon belongs to Agriochoeridae'
- 'Merycoidodon culbertsonii belongs to Merycoidodon'
- 'Mesohippus belongs to Equidae'
- 'Mesohippus assiniboiensis belongs to Mesohippus'
- 'Mesohippus brachystylus belongs to Mesohippus'
- 'Mesohippus planidens belongs to Mesohippus'
- 'Mesohippus praecocidens belongs to Mesohippus'
- 'Mesohippus propinquus belongs to Mesohippus'
- 'Mesohippus stenolophus belongs to Mesohippus'
- 'Nematognathi belongs to Actinopterygii'
- 'Ogmophis belongs to Palaeophidae'
- 'Ogmophis compactus belongs to Ogmophis'
- 'Ophidia was reranked as a suborder and belongs to Squamata'
- 'Palaeolagus belongs to Leporidae'
- 'Palaeolagus haydeni belongs to Palaeolagus'
- 'Palaeolagus turgidus belongs to Palaeolagus'
- 'Palaeophidae belongs to Ophidia'
- 'Peltosaurus belongs to Anguidae'
- 'Peltosaurus granulosus belongs to Peltosaurus'
- 'Perissodactyla was reranked as a suborder and belongs to Ungulata'
- 'Poebrotherium belongs to Camelidae'
- 'Poebrotherium wilsoni belongs to Poebrotherium'
- 'Polyprotodonta was reranked as the suborder Polyprotodontia and belongs to Marsupialia'
- 'Protemnocyon belongs to Canidae'
- 'Protospondyli belongs to Actinopterygii'
- 'Rhineastes belongs to Siluridae'
- 'Rhineastes rhaeas belongs to Rhineastes'
- 'Rhinoceros nebraskensis is recombined as Hyracodon nebrascensis'
- 'Rhinoceros occidentalis is recombined as Aceratherium occidentale'
- 'Rhinocerotidae belongs to Perissodactyla'
- 'Rodentia belongs to Mammalia'
- 'Sciuridae belongs to Simplicidentata'
- 'Sciurus belongs to Sciuridae'
- 'Sciurus saskatchewaensis belongs to Sciurus'
- 'Siluridae belongs to Nematognathi'
- 'Simplicidentata belongs to Rodentia'
- 'Squamata belongs to Reptilia'
- 'Stylemys belongs to Testudinidae'
- 'Stylemys nebrascensis belongs to Stylemys'
- 'Testudinidae belongs to Cryptodira'
- 'Testudo belongs to Testudinidae'
- 'Testudo exornata belongs to Testudo'
- 'Titanotheriidae belongs to Perissodactyla'
- 'Tragulidae belongs to Artiodactyla'
- 'Trionychia belongs to Chelonia'
- 'Trionychidae belongs to Trionychia'
- 'Trionyx belongs to Trionychidae'
- 'Trionyx leucopotamicus belongs to Trionyx'
- 'Ungulata was reranked as a order and belongs to Mammalia'